Home / 429,486.22-643,248.25-205,004.68

Finding the Fourth Proportional to 429,486.22, 643,248.25 and 205,004.68

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Solution

The fourth proportional to 429,486.22, 643,248.25 and 205,004.68 is: 307,038.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    429,486.22 : 643,248.25 = 205,004.68 : x
  2. Step 2: Convert to fraction form
    429,486.22/643,248.25 = 205,004.68/x
  3. Step 3: Cross multiply
    429,486.22x = 643,248.25 × 205,004.68
  4. Step 4: Simplify right side
    429,486.22x = 131,868,901,651.81
  5. Step 5: Solve for x
    x = 131,868,901,651.81/429,486.22
  6. Step 6: Final answer
    x = 307,038.73

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.